scholarly journals Peningkatan Usaha Masyarakat Kalibaru Melalui Pengolahan Limbah Cangkang Kerang Hijau menjadi Paving Block

TA'AWUN ◽  
2021 ◽  
Vol 1 (02) ◽  
pp. 132-141
Author(s):  
Ria Kusumaningrum ◽  
Rully Trihantana ◽  
Tubagus Rifky Thantawi
Keyword(s):  
Raw Materials ◽  
Participatory Approach ◽  
Waste Processing ◽  
Original Goal ◽  
Cement Manufacturing ◽  
Sea Coast

Kalibaru, Cilincing subdistrict is located on the sea coast of Jakarta and the livelihoods of its residents are mostly fishermen. This Kalibaru village produces shells that are quite large, so they create a lot of shellfish waste as a by-product. In tackling this waste by making it one of the basic ingredients for making paving blocks, considering that shells have CaO lime compounds, the percentage of which is 66.70% for cement manufacturing raw materials. This activity aims to empower residents through the establishment of a shellfish waste processing business into paving blocks. The method used in this activity is a participatory approach for adults through lectures, training and assistance in its establishment and management, and invites participants to be more creative and innovative in producing products. The result of this activity is that the community develops a business of processing shellfish waste into paving blocks to support the management of shellfish waste and increase community income. But overall this activity must be continued again to achieve its original goal.

A systematic literature review on green manufacturing concepts in cement industries

2017 ◽  
Vol 34 (1) ◽  
pp. 68-90 ◽  
Author(s):  
Sanjeev Shrivastava ◽  
Shrivastava R.L.
Keyword(s):  
Manufacturing Systems ◽  
Industrial Ecology ◽  
Raw Materials ◽  
Green Manufacturing ◽  
Green Technology ◽  
Cement Industry ◽  
Content Type ◽  
Technical Performance ◽  
Cement Manufacturing ◽  
The Impact

Purpose The purpose of this paper is to survey the technical performance of the cement industry including those related to procedures; groundwork of raw materials, fuels and semi-finished products for processing; accessibility of machinery, plant and equipment for various operations; arrangement and process control management. Design/methodology/approach A broad range of survey and research was reviewed, and all revealed the methods to recognize the key influences for development of green technology. The study explores the present scenario of green manufacturing (GM) strategies of Indian cement companies and provides the industrial ecology, ways of reducing energy consumption, environmental impact data collection, design and control of manufacturing systems and integration of product and manufacturing system. It also reveals the problems in decision-making systems owing to the impact of the green product design. Here, in this paper, all information is obtained by the medium of internet, journals, articles, and magazines. Findings This paper describes a problem of global warming, gas, water and other wastages emissions at the time of cement manufacturing and put forward a path that enables decision makers to assess the perception of GM in their organization and in prioritizing GM efforts. Originality/value This perspective survey is to provide an integrative outlook of performance methods for GM practices in the Indian cement industries. It gives important information, which expectantly will help in cement industry to adopt GM practices. This paper fills the gap in the literature on identification, establishment, and validation of performance measures of GM for Indian cement industries.

scholarly journals Construction waste processing management and demolition of five-storey apartment blocks in Moscow

2018 ◽  
Vol 193 ◽  
pp. 05008
Author(s):  
Vitaliy Chulkov ◽  
Myhammet Fachratov
Keyword(s):  
Raw Materials ◽  
Strength Properties ◽  
Waste Processing ◽  
Construction Waste

Data on waste processing management is presented in the article. Processing of scrap concrete waste, which is similar to traditional raw materials in composition and condition, is economically and ecologically feasible. The research suggests that concrete with scrap concrete waste shows strength properties similar to primary concrete and helps organizing waste-free production.

scholarly journals A Systematic Approach to Calculate Unit Emergy Values of Cement Manufacturing in China Using Consumption Quota of Dry and Wet Raw Materials

Buildings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 128
Author(s):  
Junxue Zhang ◽  
Ravi S. Srinivasan ◽  
Changhai Peng
Keyword(s):  
Environmental Impact ◽  
Systematic Approach ◽  
Raw Materials ◽  
Research Work ◽  
Cement Industry ◽  
Emergy Analysis ◽  
Destructive Effect ◽  
Materials Used ◽  
Cement Manufacturing ◽  
Work Done

The Chinese cement industry produced 2150 million metric tons of cement in 2014, accounting for 58.1% of the world’s total. This industry has a hugely destructive effect on the environment owing to its pollution. The environmental impact of cement manufacturing is a major concern for China. Although researchers have attempted to estimate impacts using life cycle assessment approaches, it lacks the ability to provide a holistic evaluation of the impacts on the environment. Emergy analysis, through ecological accounting, offers environmental decision making using elaborate book keeping. In spite of the high environmental impact of the cement industry, there has only been a handful of research work done to compute the unit emergy values (UEVs) of cement manufacturing in China. A thorough study of existing UEVs of cement manufacturing in China showed pitfalls that may lead to inaccurate estimations if used in emergy analysis. There is a strong need for a new, updated UEV for cement manufacturing in China, particularly reflecting both the dry and wet raw materials in the manufacturing process. This paper develops a methodology to calculate the nonrenewable resources used in cement manufacturing, particularly using mainstream cement production line. Our systematic approach-based UEV estimates of cement manufacturing in China using the quota method are 2.56 × 1012 sej/kg (wet material) and 2.46 × 1012 sej/kg (dry material). Emergy indicators such as environmental loading ratios which were calculated at 2390 (wet material) and 2300 (dry material); emergy yield ratios at 15.7 and 15.8; and emergy sustainability indices at 0.0066 and 0.0069 for dry and wet materials used in cement manufacturing, respectively; these show the immense impact on the environment in China.

A MIXED-INTEGER LINEAR PROGRAMMING (MILP) MODEL FOR SHORT-RANGE PRODUCTION SCHEDULING OF CEMENT QUARRY OPERATIONS

2010 ◽  
Vol 27 (03) ◽  
pp. 315-333 ◽  
Author(s):  
SAFI UR REHMAN ◽  
MOHAMMAD WAQAR ALI ASAD
Keyword(s):  
Linear Programming ◽  
Integer Linear Programming ◽  
Production Scheduling ◽  
Mixed Integer Linear Programming ◽  
Short Range ◽  
Raw Materials ◽  
Chemical Constituents ◽  
Cost Savings ◽  
Mixed Integer ◽  
Cement Manufacturing

A limestone quarry is the major source for supplying raw materials for cement manufacturing operations. Depending upon the available reserves, a quarry is divided into thousands of mineable blocks. Hence, raw materials inventory is identified in terms of a block model projecting the quantity and quality of critical chemical constituents desired in the cement manufacturing process. An individual block never satisfies the process quality constraints; therefore, the blending of various quarry blocks with few additives purchased from the market becomes a prerequisite. As each block is represented as an integer (0-1) variable, the objective of an optimal quarry production scheduling model is sequential mining of these blocks such that the plant quantity and quality requirements are satisfied at the lowest possible cost. This paper presents a new mixed-integer linear programming (MILP) based blending optimization model accomplishing the defined objective as a short-range production planning tool. The benefits of the model are established through a case study of an existing cement manufacturing operation in the northern part of Pakistan, ensuring significant cost savings compared to schedules produced manually.

scholarly journals Potential climate change mitigation of Indian Construction Industry through a shift in energy efficient technology by 2050

2018 ◽  
Vol 45 ◽  
pp. 155-162 ◽  
Author(s):  
Priyanka Jajal ◽  
Trupti Mishra
Keyword(s):  
Climate Change ◽  
Energy Efficiency ◽  
Energy Efficient ◽  
Raw Materials ◽  
Raw Material ◽  
Reference Scenario ◽  
Efficient Technology ◽  
Fired Bricks ◽  
Energy Efficient Technology ◽  
Cement Manufacturing

Abstract. Climate change is a growing concern that is attracting international efforts. India, as a developing country, has committed to reducing its emission intensity of GDP up to 30 %–35 % by 2030. The emission intense sectors would be targeted to achieve climate commitment. One of the emission intense sector is construction raw material manufacturing that contributes 10 % share in the total emissions making it one of the potential mitigation sector. The study examines emissions from the construction raw materials namely, cement, steel, and brick manufacturing and presents two emission scenarios up to 2050. Energy efficient scenario (S2) is compared with a reference scenario (S1) developed based on a bottom-up approach. The results indicate that a moderate energy efficiency improvements and technological shifts lead to a decrease in emissions of 72 MT CO2 by 2030 and 137 MT CO2 by 2050. Further, the steel industry has the highest reduction potential, as the current technologies are energy inefficient. Similarly, the current dependency on fired bricks may be shifted to cement setting blocks leading to emission reductions. Cement manufacturing, on the other hand, shows limited scope for emission reduction that may be achieved through energy efficiency improvements. Efforts towards energy efficiency improvements in construction raw material manufacturing would result in reductions beyond the existing commitment of the Paris Agreement for India by 2030.

scholarly journals LIMBAH AMPAS TAHU SEBAGAI BAHAN BAKU SUMBER PROTEIN NABATI PAKAN IKAN NAGAN RAYA

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Farah Diana ◽  
Ananingtyas Ananingtyas
Keyword(s):  
Raw Materials ◽  
Nutrient Content ◽  
Raw Material ◽  
Fish Feed ◽  
Waste Processing ◽  
The West ◽  
Feed Manufacturing ◽  
Strategic Location ◽  
Alternative Material ◽  
Manufacturing Techniques

Nagan Raya is one of the districts on the west coast of Aceh with an area of 311,480 km2, consisting of 9 districts, 222 villages. The strategic location, the possibility of developing a large fishery field. Nagan Raya began to develop the field of fisheries through aquaculture. Devotion to this community using the method of mentoring and coaching through knowledge transfer in the form of training and practice of making fish feed into feed products. Process activities that have been implemented in the form of mentoring and coaching then classified the type of output at each stage that is passed; Partners can make artificial fish feed with waste alternatives using pellet machines, packing and marketing. Communities in Nagan Raya also produce tofu as processed from soybeans, this preparation will produce waste of tofu waste, which is currently not utilized optimally. The raw material of this training is the tofu and waste waste of dried fish to be processed into feed powder. Tofu waste is used as a feed ingredients because it has advantages in addition to the nutrient content owned also utilize waste processing so that environmental pollution can be avoided. Waste know this is an alternative material of raw materials of environmentally friendly fish feed. Because it is made from waste processing industry residue. Conceptually and the application of science transfer transfer is done through: aspects of fish feed manufacturing techniques and marketing aspects.

scholarly journals ENVIRONMENTAL AND OCCUPATIONAL NOISE MANAGEMENT PROCESS IN CEMENT INDUSTRY

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
MARIJA HADŽI-NIKOLOVA ◽  
DEJAN MIRAKOVSKI ◽  
NIKOLINKA DONEVA ◽  
NATAŠA BAKRESKA
Keyword(s):  
Manufacturing Process ◽  
Energy Use ◽  
Process Management ◽  
Noise Control ◽  
Raw Materials ◽  
Cement Industry ◽  
Control Measures ◽  
Cement Plant ◽  
Cement Production ◽  
Cement Manufacturing

The main environmental issues associated with cement production are the consumption of raw materials, energy use and emissions in the air. Noise emissions occur throughout the whole cement manufacturing process - from preparing and processing raw materials, from the clinker burning and cement production process, from material storage as well as from the dispatch and shipping of the final products. The heavy machinery and large fans used in the cement manufacturing process can give rise to noise emissions. Cement Plants are required to comply with standards for reduction in line with national legislation, and to conduct measurements and perform noise surveys. Having this in mind, A TITAN Group Usje Cement Plant in Skopje, following their strong commitment to high environmental performance and Corporate Social Responsibility and Sustainable Development Policy in 2013-2014 have engaged an AMBICON Lab (Faculty of Natural and Technical Sciences) from Stip, to conduct a Noise Control Study in order to identify noise sources within cement plant and marl quarry, determine their impacts on nearby residents and develop noise control/protection strategies. During the past three years, the Usje Cement plant has implemented most of the noise control measures proposed in this Study. Also, a follow-up study during 2016-2017 was conducted in order to assess the effectiveness of measures taken. This paper presents the outcomes of noise reduction measures taken. Keywords: noise, cement industry, process management, measures, environment

scholarly journals Analisis Perhitungan Biaya Penambangan Batu Silika Pada Departemen Tambang PT Semen Padang

2011 ◽  
Vol 10 (1) ◽  
pp. 93
Author(s):  
Prasticia chandra Dewi
Keyword(s):  
Raw Materials ◽  
Research Result ◽  
Indirect Costs ◽  
Selling Price ◽  
Labor Costs ◽  
Cement Production ◽  
Cost Calculations ◽  
Current Price ◽  
Cement Manufacturing ◽  
The Cost

Cement manufacturing is consisting of four components that are limestone with the percent composition of 70%, iron sand 10%, silica 10%, and clay 10%. Source of major raw materials for cement production in PT Semen Padang are limestone and silica. The mining process is involving various costs such as direct costs, indirect costs, overhead costs, etc. Therefore, cost calculations needed to determine the selling price of produced silica. In calculating the cost of production considered various aspects, such as operating costs, material costs, labor costs. So that, it can determine cost of goods production. The research objective is calculating cost of goods manufacturing the silica. Benefit of the research for PT Semen Padang is describing cost of goods production in determining cost of goods sold. Cost of goods production that resulted for silica mining is IDR 58.000 per ton, while internal price of silica is IDR 53.851 per ton. Research result is show that there is difference between results based on Full costing method with current price. This shows that several other factors is necessary considered in calculating the cost of goods production. Keywords: Mining, silica, cost of goods production

scholarly journals Drone-Assisted Confined Space Inspection and Stockpile Volume Estimation

2021 ◽  
Vol 13 (17) ◽  
pp. 3356
Author(s):  
Ahmad Alsayed ◽  
Akilu Yunusa-Kaltungo ◽  
Mark K. Quinn ◽  
Farshad Arvin ◽  
Mostafa R. A. Nabawy
Keyword(s):  
Inventory Management ◽  
Raw Materials ◽  
Low Cost ◽  
Real Life ◽  
Volume Estimation ◽  
Life Assessment ◽  
Confined Space ◽  
Open Area ◽  
Manufacturing Operations ◽  
Cement Manufacturing

The accuracy of stockpile estimations is of immense criticality to process optimisation and overall financial decision making within manufacturing operations. Despite well-established correlations between inventory management and profitability, safe deployment of stockpile measurement and inspection activities remain challenging and labour-intensive. This is perhaps owing to a combination of size, shape irregularity as well as the health hazards of cement manufacturing raw materials and products. Through a combination of simulations and real-life assessment within a fully integrated cement plant, this study explores the potential of drones to safely enhance the accuracy of stockpile volume estimations. Different types of LiDAR sensors in combination with different flight trajectory options were fully assessed through simulation whilst mapping representative stockpiles placed in both open and fully confined areas. During the real-life assessment, a drone was equipped with GPS for localisation, in addition to a 1D LiDAR and a barometer for stockpile height estimation. The usefulness of the proposed approach was established based on mapping of a pile with unknown volume in an open area, as well as a pile with known volume within a semi-confined area. Visual inspection of the generated stockpile surface showed strong correlations with the actual pile within the open area, and the volume of the pile in the semi-confined area was accurately measured. Finally, a comparative analysis of cost and complexity of the proposed solution to several existing initiatives revealed its proficiency as a low-cost robotic system within confined spaces whereby visibility, air quality, humidity, and high temperature are unfavourable.

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